Mailman 3 July 2021 - Python-Dev

Summary of Python tracker Issues
by Python tracker 09 Jul '21

09 Jul '21

ACTIVITY SUMMARY (2021-07-02 - 2021-07-09) Python tracker at https://bugs.python.org/ To view or respond to any of the issues listed below, click on the issue. Do NOT respond to this message. Issues counts and deltas: open 7397 ( -1) closed 48931 (+40) total 56328 (+39) Open issues with patches: 2952 Issues opened (28) ================== #38291: Deprecate the typing.io and typing.re pseudo-modules https://bugs.python.org/issue38291 reopened by gvanrossum #44550: Spam https://bugs.python.org/issue44550 reopened by skoolbeep #44554: pdb.main is unnecessarily complicated https://bugs.python.org/issue44554 opened by jaraco #44556: ctypes unittest crashes with libffi 3.4.2 https://bugs.python.org/issue44556 opened by zan #44560: Unrecognized charset "eucgb2312_cn" in email header for many M https://bugs.python.org/issue44560 opened by tommylikehu #44561: Some expired hyperlinks in Python documentation https://bugs.python.org/issue44561 opened by StevenHsuYL #44564: DeprecationWarning in test_enum over formatting https://bugs.python.org/issue44564 opened by xtreak #44566: StopIteration subclass suppressed by contextlib.contextmanager https://bugs.python.org/issue44566 opened by graingert #44567: venv fails when called from within long path on Windows https://bugs.python.org/issue44567 opened by schwaerz #44568: test_constructor (test.test_ssl.ContextTests) ... Fatal Python https://bugs.python.org/issue44568 opened by sxt1001 #44569: traceback.py: Allow customization of per-frame line formatting https://bugs.python.org/issue44569 opened by ammar2 #44571: itertools: takedowhile() https://bugs.python.org/issue44571 opened by pavel-lexyr #44572: Calls to platform._syscmd_ver() dependent functions consume ST https://bugs.python.org/issue44572 opened by glukhov.k #44573: Organize some data files in the Lib/test directory https://bugs.python.org/issue44573 opened by Leonardofreua #44574: IDLE: Implement or delete python-context-help. https://bugs.python.org/issue44574 opened by terry.reedy #44577: Probably defect in Python 3.7.11 https://bugs.python.org/issue44577 opened by vladislavko #44579: shutil.copy() inefficient implementation in Windows https://bugs.python.org/issue44579 opened by sfmc #44580: pprint does not work for typing.Mapping https://bugs.python.org/issue44580 opened by hclark #44581: Interpreter can execute quickened opcodes in tracing mode https://bugs.python.org/issue44581 opened by Mark.Shannon #44583: Failure to build on OSF1. https://bugs.python.org/issue44583 opened by jaykrell #44584: Deprecate thread debugging PYTHONTHREADDEBUG=1 https://bugs.python.org/issue44584 opened by vstinner #44585: csv library does not correctly interpret some files https://bugs.python.org/issue44585 opened by voidloop #44586: unittest requires __init__.py for test discovery https://bugs.python.org/issue44586 opened by ma19 #44587: BooleanOptionalAction displays default=SUPPRESS unlike other a https://bugs.python.org/issue44587 opened by a.badger #44588: Possible double Py_XDECREF in cpython typeobject.c https://bugs.python.org/issue44588 opened by Wesley-Jzy #44589: Pattern Matching - duplicate keys in mapping patterns https://bugs.python.org/issue44589 opened by quentel #44590: Create frame objects lazily when needed https://bugs.python.org/issue44590 opened by Mark.Shannon #44592: tkinter focus_get() with non-tkinter Tk widget https://bugs.python.org/issue44592 opened by Akuli Most recent 15 issues with no replies (15) ========================================== #44590: Create frame objects lazily when needed https://bugs.python.org/issue44590 #44587: BooleanOptionalAction displays default=SUPPRESS unlike other a https://bugs.python.org/issue44587 #44585: csv library does not correctly interpret some files https://bugs.python.org/issue44585 #44580: pprint does not work for typing.Mapping https://bugs.python.org/issue44580 #44569: traceback.py: Allow customization of per-frame line formatting https://bugs.python.org/issue44569 #44568: test_constructor (test.test_ssl.ContextTests) ... Fatal Python https://bugs.python.org/issue44568 #44564: DeprecationWarning in test_enum over formatting https://bugs.python.org/issue44564 #44556: ctypes unittest crashes with libffi 3.4.2 https://bugs.python.org/issue44556 #44554: pdb.main is unnecessarily complicated https://bugs.python.org/issue44554 #44540: venv: activate.bat fails for venv with special characters in P https://bugs.python.org/issue44540 #44539: Imghdr JPG Quantized https://bugs.python.org/issue44539 #44532: multi subinterpreters use _PyStructSequence_InitType failed. https://bugs.python.org/issue44532 #44528: Move IP version resolving to http.server's API https://bugs.python.org/issue44528 #44525: Implement CALL_FUNCTION adaptive interpreter optimizations https://bugs.python.org/issue44525 #44522: [doc] open() function errors='surrogateescape' has inaccurate https://bugs.python.org/issue44522 Most recent 15 issues waiting for review (15) ============================================= #44590: Create frame objects lazily when needed https://bugs.python.org/issue44590 #44584: Deprecate thread debugging PYTHONTHREADDEBUG=1 https://bugs.python.org/issue44584 #44583: Failure to build on OSF1. https://bugs.python.org/issue44583 #44581: Interpreter can execute quickened opcodes in tracing mode https://bugs.python.org/issue44581 #44569: traceback.py: Allow customization of per-frame line formatting https://bugs.python.org/issue44569 #44566: StopIteration subclass suppressed by contextlib.contextmanager https://bugs.python.org/issue44566 #44561: Some expired hyperlinks in Python documentation https://bugs.python.org/issue44561 #44554: pdb.main is unnecessarily complicated https://bugs.python.org/issue44554 #44544: Add full list of possible args to textwrap: wrap, fill, shorte https://bugs.python.org/issue44544 #44543: Remove depreciated logging.warn() method https://bugs.python.org/issue44543 #44539: Imghdr JPG Quantized https://bugs.python.org/issue44539 #44534: unittest.mock.Mock.unsafe doc is garbled https://bugs.python.org/issue44534 #44532: multi subinterpreters use _PyStructSequence_InitType failed. https://bugs.python.org/issue44532 #44531: Add _PyType_AllocNoTrack() function: allocate without tracking https://bugs.python.org/issue44531 #44525: Implement CALL_FUNCTION adaptive interpreter optimizations https://bugs.python.org/issue44525 Top 10 most discussed issues (10) ================================= #11343: Make errors due to full parser stack identifiable https://bugs.python.org/issue11343 7 msgs #44572: Calls to platform._syscmd_ver() dependent functions consume ST https://bugs.python.org/issue44572 7 msgs #39100: email.policy.SMTP throws AttributeError on invalid header https://bugs.python.org/issue39100 6 msgs #44571: itertools: takedowhile() https://bugs.python.org/issue44571 6 msgs #43908: array.array should remain immutable: add Py_TPFLAGS_IMMUTABLET https://bugs.python.org/issue43908 5 msgs #43950: Include column offsets for bytecode instructions https://bugs.python.org/issue43950 5 msgs #44588: Possible double Py_XDECREF in cpython typeobject.c https://bugs.python.org/issue44588 5 msgs #26280: ceval: Optimize list[int] (subscript) operation similarly to C https://bugs.python.org/issue26280 4 msgs #41249: TypedDict inheritance doesn't work with get_type_hints and pos https://bugs.python.org/issue41249 4 msgs #44501: Packing constant call arguments https://bugs.python.org/issue44501 4 msgs Issues closed (39) ================== #4600: __class__ assignment error message confusing https://bugs.python.org/issue4600 closed by terry.reedy #16321: Move eq.h out of stringlib https://bugs.python.org/issue16321 closed by rhettinger #23609: Export PyModuleObject in moduleobject.h https://bugs.python.org/issue23609 closed by scoder #31218: del expects __delitem__ if __setitem__ is defined https://bugs.python.org/issue31218 closed by rhettinger #34266: Bad behavior with "restart \" or "restart "" in pdb https://bugs.python.org/issue34266 closed by iritkatriel #34919: Crash caused by certain characters in a string https://bugs.python.org/issue34919 closed by iritkatriel #35277: Upgrade bundled pip/setuptools https://bugs.python.org/issue35277 closed by ned.deily #35815: Able to instantiate a subclass with abstract methods from __in https://bugs.python.org/issue35815 closed by gvanrossum #35866: concurrent.futures deadlock https://bugs.python.org/issue35866 closed by vstinner #36663: pdb: store whole exception information in locals (via user_exc https://bugs.python.org/issue36663 closed by iritkatriel #41137: pdb uses the locale encoding for .pdbrc https://bugs.python.org/issue41137 closed by methane #41676: asyncio.Event.wait broken link from asyncio.Event https://bugs.python.org/issue41676 closed by erlendaasland #42778: Add follow_symlinks=True parameter to both os.path.samefile() https://bugs.python.org/issue42778 closed by serhiy.storchaka #42889: Incorrect behavior after ast node visits https://bugs.python.org/issue42889 closed by terry.reedy #43077: Update bundled pip to 21.0.1 and setuptools to 52.0.0 https://bugs.python.org/issue43077 closed by paul.moore #43384: Include regen-stdlib-module-names in regen-all https://bugs.python.org/issue43384 closed by nascheme #43453: docs: runtime_checkable example refers to changed behavior in https://bugs.python.org/issue43453 closed by gvanrossum #43895: Unnecessary Cache of Shared Object Handles https://bugs.python.org/issue43895 closed by gregory.p.smith #44129: zipfile: Add descriptive global variables for general purpose https://bugs.python.org/issue44129 closed by serhiy.storchaka #44145: hmac.update is not releasing the GIL when openssl's hmac is us https://bugs.python.org/issue44145 closed by gregory.p.smith #44383: argparse.BooleanOptionalAction interacts poorly with ArgumentD https://bugs.python.org/issue44383 closed by juliangilbey #44446: linecache.getline TypeError when formatting tracebacks in stac https://bugs.python.org/issue44446 closed by pablogsal #44479: Windows build doesn't regenerate some files https://bugs.python.org/issue44479 closed by steve.dower #44530: Propagate qualname from the compiler unit to code objects for https://bugs.python.org/issue44530 closed by pablogsal #44552: incomplete documentation of __main__.py https://bugs.python.org/issue44552 closed by mandolaerik #44553: types.Union should support GC https://bugs.python.org/issue44553 closed by kj #44555: Dictionary operations are LINEAR for any dictionary (for a par https://bugs.python.org/issue44555 closed by rhettinger #44557: It's a bug? Dict https://bugs.python.org/issue44557 closed by steven.daprano #44558: Make the implementation consistency of operator.countOf/indexO https://bugs.python.org/issue44558 closed by corona10 #44559: Enum: revert to 3.9 https://bugs.python.org/issue44559 closed by ethan.furman #44562: types.GenericAlias should decref instead of using delete in tp https://bugs.python.org/issue44562 closed by pablogsal #44563: Failed tee.fromiterable() corrupts the linked list of all GC o https://bugs.python.org/issue44563 closed by pablogsal #44565: python configure config.status: error: cannot find input file: https://bugs.python.org/issue44565 closed by kevinshi #44570: 3.10.0b3 doesn't trace line events for return in some cases https://bugs.python.org/issue44570 closed by pablogsal #44575: Windows installer prohibits different patches for the same ver https://bugs.python.org/issue44575 closed by zach.ware #44576: AttributeError: incorrect line identified in Python 3.10 https://bugs.python.org/issue44576 closed by Mark.Shannon #44578: dict/list with more than two type parameters doesn't raise a T https://bugs.python.org/issue44578 closed by gvanrossum #44582: Accelerate mimetypes.init on Windows https://bugs.python.org/issue44582 closed by steve.dower #44591: Added max heap push https://bugs.python.org/issue44591 closed by rhettinger

1 0

Does anyone use threading debug PYTHONTHREADDEBUG=1 env var? Can I remove it?
by Victor Stinner 08 Jul '21

08 Jul '21

Hi, Does anyone use threading debug PYTHONTHREADDEBUG=1 env var on a Python debug build? If not, can I just remove it? -- To fix a race condition at thread exit on Linux using the glibc, I removed calls to pthread_exit() (PyThread_exit_thread()) in the _thread module: https://bugs.python.org/issue44434 A side effect of this change is the removal of the "PyThread_exit_thread called" threading debug log when using PYTHONTHREADDEBUG=1 environment variable. I never used PYTHONTHREADDEBUG. I just tried it and it produces tons of output in stdout about locks. It looks basically useless because it produces way too many logs, and it pollutes stdout (ex: most Python tests fail when it's enabled). This debug mode requires to build Python in debug mode (./configure --with-pydebug): https://docs.python.org/dev/using/configure.html#python-debug-build IMO there are enough external debugging tools to debug threading issues. Python no longer has to come with its built-in logs. I propose to deprecate the feature in Python 3.11 and remove it in 2 releases (Python 3.13). Victor -- Night gathers, and now my watch begins. It shall not end until my death.

3 3

Stale PR
by Yair Frid 06 Jul '21

06 Jul '21

Hello, a few months ago i created this PR: https://github.com/python/cpython/pull/24181 Which has since gone stale, I would really like it to be reviewed before i continue fixing other issues as i do not want to have to deal with a backlog of PRs Thanks in advance, Yair.

3 2

Summary of Python tracker Issues
by Python tracker 02 Jul '21

02 Jul '21

ACTIVITY SUMMARY (2021-06-25 - 2021-07-02) Python tracker at https://bugs.python.org/ To view or respond to any of the issues listed below, click on the issue. Do NOT respond to this message. Issues counts and deltas: open 7398 (-12) closed 48891 (+57) total 56289 (+45) Open issues with patches: 2951 Issues opened (28) ================== #23041: csv needs more quoting rules https://bugs.python.org/issue23041 reopened by skip.montanaro #41180: marshal load bypass code.__new__ audit event https://bugs.python.org/issue41180 reopened by steve.dower #44511: Improve the bytecode for mapping patterns https://bugs.python.org/issue44511 opened by brandtbucher #44512: csv.DictWriter: inconsistency in handling of extrasaction arg https://bugs.python.org/issue44512 opened by andrei.avk #44514: configparser.rst & bz2.rst leave temp files after 'make doctes https://bugs.python.org/issue44514 opened by kfollstad #44515: contextlib test incompatibility with non-refcounted GC https://bugs.python.org/issue44515 opened by ncoghlan #44516: Update bundled pip to 21.1.3 https://bugs.python.org/issue44516 opened by sbidoul #44517: test__xxsubinterpreters: AMD64 Fedora Stable 3.x buildbot abor https://bugs.python.org/issue44517 opened by erlendaasland #44518: Finalization of non-exhausted asynchronous generators is defer https://bugs.python.org/issue44518 opened by serhiy.storchaka #44521: str.removeprefix(): add strict: bool https://bugs.python.org/issue44521 opened by socketpair #44522: [doc] open() function errors='surrogateescape' has inaccurate https://bugs.python.org/issue44522 opened by bupjae2 #44524: __name__ attribute in typing module https://bugs.python.org/issue44524 opened by farcat #44525: Implement CALL_FUNCTION adaptive interpreter optimizations https://bugs.python.org/issue44525 opened by kj #44528: Move IP version resolving to http.server's API https://bugs.python.org/issue44528 opened by pavel-lexyr #44530: Propagate qualname from the compiler unit to code objects for https://bugs.python.org/issue44530 opened by Gabriele Tornetta #44531: Add _PyType_AllocNoTrack() function: allocate without tracking https://bugs.python.org/issue44531 opened by vstinner #44532: multi subinterpreters use _PyStructSequence_InitType failed. https://bugs.python.org/issue44532 opened by JunyiXie #44533: Where are the log file(s) https://bugs.python.org/issue44533 opened by tygrus #44534: unittest.mock.Mock.unsafe doc is garbled https://bugs.python.org/issue44534 opened by roysmith #44537: Document PGO in devguide https://bugs.python.org/issue44537 opened by gvanrossum #44539: Imghdr JPG Quantized https://bugs.python.org/issue44539 opened by mohamadmansourx #44540: venv: activate.bat fails for venv with special characters in P https://bugs.python.org/issue44540 opened by MB113 #44543: Remove depreciated logging.warn() method https://bugs.python.org/issue44543 opened by Harry-Lees #44544: Add full list of possible args to textwrap: wrap, fill, shorte https://bugs.python.org/issue44544 opened by andrei.avk #44547: fraction.Fraction does not implement __int__. https://bugs.python.org/issue44547 opened by mamrhein #44549: BZip 1.0.6 Critical Vulnerability https://bugs.python.org/issue44549 opened by s.s.mahato #44552: incomplete documentation of __main__.py https://bugs.python.org/issue44552 opened by mandolaerik #44553: types.Union should support GC https://bugs.python.org/issue44553 opened by kj Most recent 15 issues with no replies (15) ========================================== #44553: types.Union should support GC https://bugs.python.org/issue44553 #44552: incomplete documentation of __main__.py https://bugs.python.org/issue44552 #44549: BZip 1.0.6 Critical Vulnerability https://bugs.python.org/issue44549 #44540: venv: activate.bat fails for venv with special characters in P https://bugs.python.org/issue44540 #44539: Imghdr JPG Quantized https://bugs.python.org/issue44539 #44534: unittest.mock.Mock.unsafe doc is garbled https://bugs.python.org/issue44534 #44532: multi subinterpreters use _PyStructSequence_InitType failed. https://bugs.python.org/issue44532 #44528: Move IP version resolving to http.server's API https://bugs.python.org/issue44528 #44525: Implement CALL_FUNCTION adaptive interpreter optimizations https://bugs.python.org/issue44525 #44522: [doc] open() function errors='surrogateescape' has inaccurate https://bugs.python.org/issue44522 #44516: Update bundled pip to 21.1.3 https://bugs.python.org/issue44516 #44515: contextlib test incompatibility with non-refcounted GC https://bugs.python.org/issue44515 #44514: configparser.rst & bz2.rst leave temp files after 'make doctes https://bugs.python.org/issue44514 #44512: csv.DictWriter: inconsistency in handling of extrasaction arg https://bugs.python.org/issue44512 #44511: Improve the bytecode for mapping patterns https://bugs.python.org/issue44511 Most recent 15 issues waiting for review (15) ============================================= #44553: types.Union should support GC https://bugs.python.org/issue44553 #44544: Add full list of possible args to textwrap: wrap, fill, shorte https://bugs.python.org/issue44544 #44543: Remove depreciated logging.warn() method https://bugs.python.org/issue44543 #44539: Imghdr JPG Quantized https://bugs.python.org/issue44539 #44532: multi subinterpreters use _PyStructSequence_InitType failed. https://bugs.python.org/issue44532 #44531: Add _PyType_AllocNoTrack() function: allocate without tracking https://bugs.python.org/issue44531 #44530: Propagate qualname from the compiler unit to code objects for https://bugs.python.org/issue44530 #44525: Implement CALL_FUNCTION adaptive interpreter optimizations https://bugs.python.org/issue44525 #44516: Update bundled pip to 21.1.3 https://bugs.python.org/issue44516 #44515: contextlib test incompatibility with non-refcounted GC https://bugs.python.org/issue44515 #44514: configparser.rst & bz2.rst leave temp files after 'make doctes https://bugs.python.org/issue44514 #44512: csv.DictWriter: inconsistency in handling of extrasaction arg https://bugs.python.org/issue44512 #44511: Improve the bytecode for mapping patterns https://bugs.python.org/issue44511 #44501: Packing constant call arguments https://bugs.python.org/issue44501 #44493: Missing terminated NUL in the length of sockaddr_un https://bugs.python.org/issue44493 Top 10 most discussed issues (10) ================================= #44490: PEP 604 Union (int | str) doesn't have __parameters__ https://bugs.python.org/issue44490 9 msgs #43625: CSV has_headers heuristic could be improved https://bugs.python.org/issue43625 7 msgs #44531: Add _PyType_AllocNoTrack() function: allocate without tracking https://bugs.python.org/issue44531 7 msgs #44547: fraction.Fraction does not implement __int__. https://bugs.python.org/issue44547 7 msgs #44517: test__xxsubinterpreters: AMD64 Fedora Stable 3.x buildbot abor https://bugs.python.org/issue44517 6 msgs #44521: str.removeprefix(): add strict: bool https://bugs.python.org/issue44521 6 msgs #33140: shutil.chown should not be defined in Windows https://bugs.python.org/issue33140 5 msgs #44452: Allow paths to be joined without worrying about a leading slas https://bugs.python.org/issue44452 5 msgs #44518: Finalization of non-exhausted asynchronous generators is defer https://bugs.python.org/issue44518 5 msgs #44524: __name__ attribute in typing module https://bugs.python.org/issue44524 5 msgs Issues closed (50) ================== #30256: Adding a SyncManager Queue proxy to a SyncManager dict or Name https://bugs.python.org/issue30256 closed by gvanrossum #32215: sqlite3 400x-600x slower depending on formatting of an UPDATE https://bugs.python.org/issue32215 closed by iritkatriel #34798: pprint ignores the compact parameter for dicts https://bugs.python.org/issue34798 closed by iritkatriel #36265: Remove ABCs from collections https://bugs.python.org/issue36265 closed by iritkatriel #36479: [subinterpreters] Exit threads when interpreter is finalizing https://bugs.python.org/issue36479 closed by vstinner #37395: Core interpreter should be linked with libgcc_s.so on Linux https://bugs.python.org/issue37395 closed by vstinner #37398: contextlib.ContextDecorator decorating async functions https://bugs.python.org/issue37398 closed by ncoghlan #38055: Starting multiprocessing.Process raises FileNotFoundError unex https://bugs.python.org/issue38055 closed by iritkatriel #38062: Clarify that atexit.unregister matches by equality, not identi https://bugs.python.org/issue38062 closed by iritkatriel #40528: Improve / Clear ASDL generator https://bugs.python.org/issue40528 closed by BTaskaya #40620: [doc] Range tutorial shorthand could be made clearer https://bugs.python.org/issue40620 closed by iritkatriel #41539: print blocks with multiprocessing and buffered output https://bugs.python.org/issue41539 closed by pitrou #42588: Improvements to graphlib.TopologicalSorter.static_order() docu https://bugs.python.org/issue42588 closed by pablogsal #42888: Not installed ��libgcc_s.so.1�� causes exit crash. https://bugs.python.org/issue42888 closed by vstinner #43232: Prohibit previously deprecated operations on asyncio.trsock.Tr https://bugs.python.org/issue43232 closed by serhiy.storchaka #43234: Prohibit passing non-ThreadPoolExecutor executors to loop.set_ https://bugs.python.org/issue43234 closed by serhiy.storchaka #43412: object.h -Wcast-qual warning https://bugs.python.org/issue43412 closed by vstinner #43552: Add locale.get_locale_encoding() and locale.get_current_locale https://bugs.python.org/issue43552 closed by vstinner #43832: asyncio + multiprocessing = core dump in sem_trywait https://bugs.python.org/issue43832 closed by asvetlov #44110: Improve string's __getitem__ error message https://bugs.python.org/issue44110 closed by serhiy.storchaka #44117: [C API] Remove deprecated PyEval_InitThreads() https://bugs.python.org/issue44117 closed by vstinner #44229: test_ssl: test_get_server_certificate() and test_msg_callback_ https://bugs.python.org/issue44229 closed by erlendaasland #44288: unittest: _is_relevant_tb_level() fails because tb.tb_frame.f_ https://bugs.python.org/issue44288 closed by vstinner #44313: Generate LOAD_ATTR+CALL_FUNCTION instead of LOAD_METHOD+CALL_M https://bugs.python.org/issue44313 closed by BTaskaya #44404: tkinter's after() AttributeError with functools.partial (no at https://bugs.python.org/issue44404 closed by serhiy.storchaka #44440: logging does not work as documented (setLevel) https://bugs.python.org/issue44440 closed by vinay.sajip #44464: Remove flake8 exception for deprecation warning (importlib.met https://bugs.python.org/issue44464 closed by jaraco #44468: Shouldn't `typing.get_type_hints()` default `globalns` to `{}` https://bugs.python.org/issue44468 closed by gvanrossum #44470: 3.11 docs.python.org in Polish not English? https://bugs.python.org/issue44470 closed by mdk #44471: Raise TypeError in ExitStack.enter_context() for bad argument https://bugs.python.org/issue44471 closed by serhiy.storchaka #44498: add deprecation warnings for asynchat, asyncore and smtpd https://bugs.python.org/issue44498 closed by iritkatriel #44509: Build in type alias for paths https://bugs.python.org/issue44509 closed by arakowski #44510: file.read() UnicodeDecodeError with UTF-8 BOM in files on Wind https://bugs.python.org/issue44510 closed by eryksun #44513: for string methods strip, lstrip, rstrip, when param is a stri https://bugs.python.org/issue44513 closed by steven.daprano #44519: help(math.fabs) https://bugs.python.org/issue44519 closed by rhettinger #44520: In Lib/urllib/parse.py quote_from_bytes, exception is thrown i https://bugs.python.org/issue44520 closed by iritkatriel #44523: weakref.proxy documentation might be outdated https://bugs.python.org/issue44523 closed by pablogsal #44526: Doc typo in "What��s New In Python 3.10" (x/y-axis) https://bugs.python.org/issue44526 closed by pablogsal #44527: On Windows, subprocess.run gets stuck indefinitely https://bugs.python.org/issue44527 closed by eryksun #44529: Using typing.Union in isinstance checks https://bugs.python.org/issue44529 closed by eric.smith #44535: Cannot build in VS 2022 https://bugs.python.org/issue44535 closed by steve.dower #44536: wrong output of np.lcm.reduce(*awg) https://bugs.python.org/issue44536 closed by mark.dickinson #44538: ast.Slice 3.9.6 documentation bug https://bugs.python.org/issue44538 closed by c3-timjbaer #44541: collections.abc.Sequence index implementation https://bugs.python.org/issue44541 closed by kj #44542: Python 3.9.6 Can't Find `coverage` https://bugs.python.org/issue44542 closed by floatingsunfish #44545: spam https://bugs.python.org/issue44545 closed by mark.dickinson #44546: spam https://bugs.python.org/issue44546 closed by mark.dickinson #44548: ttk Indeterminate Progressbar Not Animating Correctly After `s https://bugs.python.org/issue44548 closed by Jim.Jewett #44550: SPAM https://bugs.python.org/issue44550 closed by xtreak #44551: Substraction: unprecise result https://bugs.python.org/issue44551 closed by eric.smith

1 0

Is the Python review process flawed?
by esmeraldagarcia＠byom.de 02 Jul '21

02 Jul '21

I just stumbled upon the following issue and subsequent pull request. It is a very small bugfix. There is currently a bug in Python and this pull request fixes it. It's not a new feature or an enhancement, it is a bugfix! Yet, it doesn't get reviewed, nor merged. And this has been going on since March 2017. Why not just merge this? It's not like it's huge or obstructing or obfuscating the current code base? There's always time to write an improvement or a complete rewrite of this module feature later for an upcoming minor release. But if there is currently a bug in Python and the bugfix is available - why doesn't it get merged? https://github.com/python/cpython/pull/4819 If this doesn't get fixed, doesn't that mean the Python review process is flawed? Sure, Python is an open source project and many people just work in their free time. But this doesn't really apply here, does it? The bugfix is available. Only a review is required. All this is happening while new features get added to Python with every new minor version. While the bug is allowed to live there. Please help me understand how this can happen. I love Python. No hard feelings. But this is really bugging me and I can't help but feel disappointed.

15 17

Fixing unbuffered output on Windows
by Fabio Zadrozny 02 Jul '21

02 Jul '21

Hi all, I've created a pull request some time ago to fix https://bugs.python.org/issue42044 ( https://github.com/python/cpython/pull/26678). I know python devs are pretty busy, but I'd really appreciate it if someone could take a look at it (as I *think* it's a simple fix). Thanks, Fabio

1 0

Request for reviewers: pathlib improvements
by Barney Gale 01 Jul '21

01 Jul '21

I’m working towards supporting subclassing pathlib.Path for things like zip/tar archives, iso files, S3, etc. This was first brought up a few years ago in bpo-24132 <https://bugs.python.org/issue24132> and discussed further on the python-ideas forum <https://discuss.python.org/t/make-pathlib-extensible/3428>. Before I can approach the meat of the issue, I'd like to land a handful of backwards-compatible patches that tidy up the pathlib internals. These are: - #19220 <https://github.com/python/cpython/pull/19220> / bpo-39924 <https://bugs.python.org/issue39924>: Handle missing os functions more consistently in pathlib - #18838 <https://github.com/python/cpython/pull/18838> / bpo-39895 <https://bugs.python.org/issue39895>: Move pathlib.Path.touch() implementation into the path accessor - #19342 <https://github.com/python/cpython/pull/19342> / bpo-40038 <https://bugs.python.org/issue40038>: Remove partial support for preserving accessor when modifying a path - #18841 <https://github.com/python/cpython/pull/18841> / bpo-39899 <https://bugs.python.org/issue39899>: Make pathlib use os.path.expanduser() to expand home directories - #18834 <https://github.com/python/cpython/pull/18834> / bpo-39659 <https://bugs.python.org/issue39659>: Route calls from pathlib.Path to os.getcwd() via the path accessor - #18864 <https://github.com/python/cpython/pull/18864> / bpo-39906 <https://bugs.python.org/issue39906>: Add follow_symlinks parameter to pathlib.Path.stat() and chmod() - #24294 <https://github.com/python/cpython/pull/24294> / bpo-42999 <https://bugs.python.org/issue42999>: Expand and clarify pathlib.Path.link_to() documentation Could I please request review of these patches? A couple may already be ready to land. (I appreciate they’re a little dry. This is all prep work for the introduction of a shiny new class, tentatively named ‘AbstractPath’). Thanks! Barney

1 3

Critique of PEP 657
by Mark Shannon 01 Jul '21

01 Jul '21

Hi, Apologies for my tardiness in doing this, but no one explicitly said it was too late to critique PEP 657... Critique of PEP 657 (Include Fine Grained Error Locations in Tracebacks) ------------------------------------------------------------------------ First of all I want to say that I support the goal of improving error messages. IMO the PEP should be "accepted in principle". I think all of the issues below can be fixed while still supporting the general aims of the PEP. The change from points to ranges as locations --------------------------------------------- Because Python is a procedural language, there is an expectation that code executes in a certain order. PEP 626 (Precise line numbers for debugging and other tools) seeks to guarantee that that expectation is met. PEP 657 describes how locations for exceptions are to be handled, but is vague on the treatment of locations for tracing, profiling and debugging. PEP 657 proposes that locations for exceptions be treated as ranges, whereas tracing, profiling and debugging currently treat locations as points. Either this will end in contradictions and confusion should those locations disagree, or the locations for tracing, profiling and debugging must change. Using the start of a range as the point location for tracing may be misleading when the operation that causes an exception is on a different line within that range. Consider this example: https://github.com/python/cpython/blob/main/Lib/test/test_compile.py#L861 This might seem like a contrived case, but it is based on a real bug report https://bugs.python.org/issue39316 1. def load_method(): 2. return ( 3. o. 4. m( 5. 0 6. ) Currently the call is traced on line 4. PEP 657 would change the location of the call from line 4 to the range 3-6, which would mean that the line of call is no longer traced separately (or traced several times). PEP 657 makes no mention of this change. The PEP claims that these changes are improvements. Maybe they are, but they are quite impactful changes which the PEP glosses over. The impact on tools like coverage.py and debuggers should be made clearer. For example, how would one set a breakpoint on line 4 above? There are other languages (e.g. jinja templates) that compile to Python AST and bytecode. These *might* produce locations that overlap, but are not nested. The behavior of tracing and debuggers needs to be described for those locations. Backwards Compatibility ----------------------- PEP 657 claims it is fully backwards compatible, but it cannot be both backwards compatible and consistent. There are fundamental differences between using ranges and points as locations. Impact on startup time ---------------------- The PEP 657 suggests the impact on startup would be negligible. That is not quite true. The impact on startup is probably acceptable, but a proper analysis needs to be made. The increase in size of pyc files ~20% puts an upper bound on the increase of startup time, but I would expect it to be much less than that as loading files from disk is only a fraction of startup. Currently, startup is dominated by inefficiencies in interpreter creation, unmarshalling and module loading. We plan to reduce these a lot for 3.11, so that the impact of PEP 657 on startup will be larger (as a ratio) than experiments with 3.10 suggest. The API ------- The C API adds three new functions, one each for the end line, start column and end column. This is either slow, as any compressed table needs to be parsed four times, or space inefficient using an uncompressed table. Opt-out ------- Allowing opt-out prevents consistent compression of location data, resulting in larger pyc files for those that do not opt-out. The exact semantics, in terms of error formatting, tracing, etc is not described should the user opt-out. Summary ------- Overall, there is nothing that blocks acceptance of the PEP in principle, but there are quite a few issues that need resolving. Suggestions ----------- 1. Clarify, in detail, the impact on line-based tools like profilers, coverage.py and debuggers. This should include help on how to use the new APIs and where using the old APIs might result in behavioral changes. 2. Change the C API to a single function: int PyCode_Addr2Location(PyCodeObject *co, int addr, int *startline, int *startcolumn, int *endline, int *endcolumn) 3. Drop the opt-out option. If the extra information is optional, then the compression scheme must allow for that; making the code more complex and potentially less efficient. Does opting out use the start of the range, or the old line, as the location? 4. Drop the limitation on column offsets. The data needs to be compressed anyway, so allowing arbitrary column offsets is effectively free. 6. Store all location information in a single table (this applies more to the implementation than the PEP) Using four separate objects to hold the location info adds a lot of overhead for most functions. Cheers, Mark.

4 8